</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

Tungsten Zirconium Oxide Dispersion from Mexico

An aqueous dispersion of tungsten oxide and zirconium oxide nanoparticles for ceramic coatings and high-temperature applications. Provides thermal barrier properties in foundry and aerospace components. Classified in 3824.99.3500 as a mixture of inorganic tungsten compounds.

Duty Rate — Mexico → United States

16.5%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

Import Tips

Submit nanoparticle size distribution and composition reports for accurate inorganic mixture verification

Label as non-hazardous if stabilized; otherwise, follow UN hazardous goods protocols

Avoid bulk packaging misclassification by specifying dispersion concentration on invoices